A detailed history of Rock Springs Capital Management LP transactions in Mersana Therapeutics, Inc. stock. As of the latest transaction made, Rock Springs Capital Management LP holds 3,046,782 shares of MRSN stock, worth $4.94 Million. This represents 0.2% of its overall portfolio holdings.

Number of Shares
3,046,782
Previous 3,046,782 -0.0%
Holding current value
$4.94 Million
Previous $6.12 Million 5.98%
% of portfolio
0.2%
Previous 0.19%

Shares

18 transactions
Quarter Operation Price Per share shares change shares Held SEC Form
Q4 2023

Feb 14, 2024

SELL
$1.11 - $2.34 $395,549 - $833,861
-356,351 Reduced 10.47%
3,046,782 $7.07 Million
Q2 2023

Aug 14, 2023

SELL
$3.08 - $9.55 $2.16 Million - $6.69 Million
-700,670 Reduced 17.07%
3,403,133 $11.2 Million
Q4 2022

Feb 14, 2023

BUY
$5.65 - $7.86 $157,324 - $218,861
27,845 Added 0.68%
4,103,803 $24 Million
Q2 2022

Aug 15, 2022

BUY
$2.84 - $5.0 $909,191 - $1.6 Million
320,138 Added 8.52%
4,075,958 $18.8 Million
Q1 2022

May 16, 2022

BUY
$3.74 - $6.63 $1.9 Million - $3.36 Million
506,870 Added 15.6%
3,755,820 $15 Million
Q4 2021

Feb 14, 2022

BUY
$5.48 - $9.86 $1.25 Million - $2.25 Million
228,248 Added 7.56%
3,248,950 $20.2 Million
Q3 2021

Nov 15, 2021

BUY
$8.56 - $14.47 $1.5 Million - $2.53 Million
175,084 Added 6.15%
3,020,702 $28.5 Million
Q2 2021

Aug 16, 2021

BUY
$13.28 - $18.07 $936,120 - $1.27 Million
70,491 Added 2.54%
2,845,618 $38.6 Million
Q1 2021

May 17, 2021

BUY
$15.31 - $26.52 $10.9 Million - $18.9 Million
711,460 Added 34.48%
2,775,127 $44.9 Million
Q4 2020

Feb 16, 2021

BUY
$16.84 - $27.59 $3 Million - $4.92 Million
178,239 Added 9.45%
2,063,667 $54.9 Million
Q3 2020

Nov 16, 2020

BUY
$16.2 - $25.7 $113,400 - $179,900
7,000 Added 0.37%
1,885,428 $35.1 Million
Q2 2020

Aug 14, 2020

BUY
$5.24 - $23.4 $3.38 Million - $15.1 Million
645,428 Added 52.35%
1,878,428 $44 Million
Q4 2019

Feb 14, 2020

SELL
$1.45 - $6.73 $242,150 - $1.12 Million
-167,000 Reduced 11.93%
1,233,000 $7.07 Million
Q1 2019

May 15, 2019

BUY
$3.51 - $7.3 $1.4 Million - $2.92 Million
400,000 Added 40.0%
1,400,000 $7.36 Million
Q2 2018

Aug 14, 2018

SELL
$14.2 - $22.68 $4.26 Million - $6.8 Million
-300,000 Reduced 23.08%
1,000,000 $17.9 Million
Q1 2018

May 15, 2018

SELL
$13.56 - $18.48 $363,408 - $495,264
-26,800 Reduced 2.02%
1,300,000 $20.5 Million
Q4 2017

Feb 14, 2018

SELL
$14.95 - $19.9 $47,840 - $63,679
-3,200 Reduced 0.24%
1,326,800 $21.8 Million
Q3 2017

Nov 14, 2017

BUY
$14.8 - $18.06 $19.7 Million - $24 Million
1,330,000
1,330,000 $23 Million

Others Institutions Holding MRSN

About Mersana Therapeutics, Inc.


  • Ticker MRSN
  • Exchange NASDAQ
  • Sector Healthcare
  • Industry Biotechnology
  • Shares Outstandng 97,169,296
  • Market Cap $157M
  • Description
  • Mersana Therapeutics, Inc., a clinical stage biopharmaceutical company, develops antibody drug conjugates (ADC) for cancer patients with unmet need. It develops XMT-1592, a Dolasynthen ADC targeting NaPi2b-expressing tumor cells, which is in phase I clinical trial for the treatment of ovarian cancer and NSCLC adenocarcinoma. The company also dev...
More about MRSN
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